Thinking of a new gadget...

[max]

Another wild idea that probably won't make it past scrutiny, but a one piece unit for both positions;



The "hinge point" could be 36 wide ribbon cable of which only 6 or however many cores are used for electrical connections or two flat cables and the unit has to be supported in an angle on top of the brake cover.

And the rotary switch can be anywhere on the cable to the bike ( more cores required ).
( edit )
But shuffling through all the iterations is it not more practical to just mount the whole thing on the brake cover on an appropriate angle ( does it need an angle? ) and mounting the display on the back of the cm pcb with just one cable?
I.e. one universal unit?